Asked by Twg

Three angles of a quadrilateral each measures 87*(degrees)..what is the measure of the fourth angle??
Answered by Ms. Sue
See if you can figure it out after studying this site.

http://www.mathsrevision.net/gcse/pages.php?page=17
Answered by Reiny
All 4 of them have to add up to 360º
so far you have 3x87 or 261º

So how big is the fourth angle ?
Answered by kiria
If a quadrilateral has two 75 angles and 110 angles what measure is remaining angle
Answered by monika
99degree
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